White ceramic- irrespective of lighting
Environment texture:

First of all you'll need some Environment Map. I suggest to use HDRI imitating photo studio setup. You can find many of them, even for free.



After selecting one change Strenght accordingly to your needs. And you can see our environment.



Background:

To get gray background, or any other color create plane and extrude it with nice subtle curve. 



Material:

I'm using simple Diffuse/Glossy mixed by Fresnel but you can go with any other setup. Remember that default color in Blender isn't pure white.

Blend file:

Here it's my blend file with HDRI map packed.